just to correct something in my type
type T_node;
   type Pt_tree is access T_Node;

   type T_Node is record
      name : T_name;
      G, D : Pt_tree;
   end record;

Franck a �crit dans le message <8tuk7l$aq5$1@wanadoo.fr>...
>hi !
>
>i've got a pb : i don't know how to save a binary tree in a file, and then
>load it from the file
>
>here are the type i use
>
>   type T_node;
>   type Pt_tree is access T_Node;
>
>   type T_Node is record
>      name : T_name;
>      G, D : Pt_Arbre;
>   end record;
>
>name contain name, surname, birthday etc...
>
>thanks for the help ;o)
>
>P.S :you can send the answer to kribal@caramail.com
>
>